Friterie is a small sliver of a shop tucked away but they are worth mentioning because they do serve some of the better fresh hand cooked fries.  They are double cooked to get a good crisp outside the soft potato.  There is always a line and this trip I found they were selling snacks in addition to well done fries.  Orders of fries are in 3 sizes that come in the usual paper cone.  An assortment of toppings are also available but my favorite is to just get the fries with a little extra salt.  They do have the little forks to keep it a bit less messy if you want toppings.  On the largest order it looked like they put some topping in the middle as well as on the top.  There are a few tables to eat at out front or you can just munch on them as you walk or stand around with all the other people eating fries.  They also have added a cool payment machine that takes cards.  It’s a snack you have to try when in Brussels but one that the quality varies greatly on, so start small and don’t be afraid to toss.